Study of respiratory and immunologic changes in the workers of a poultry farm.

The present investigation was designed to the study of respiratory symptoms and immunologic changes in workers of a poultry farm, chronically exposed to various organic allergens (avian, fungi, etc.). The group studied included 202 exposed subjects (109 at the slaughter house, 93 on the farms) and 100 controls.

Relationships of carbon dioxide retention to ventilatory impairment and hypoxemia in chronic obstructive lung disease.

In a group of 80 male patients (average age 52.5 years) with severe obstructive ventilatory impairment (FEV1.0 less than 40% of predicted) due to chronic bronchitis and/or emphysema, the blood carbon dioxide tension measured at rest, in a stable clinical status, was confronted to the spirometric variables and the oxygen tension.